Watch-case



UNITED STATES PATENT OFFICE.

CHARLES K. GILES, OF CHICAGO, ILLINOIS.

WATCH-CASE.

SPECIFICATION forming part of Letters Patent No. 365,987, dated July 5, 1887.

Application filed Dcccmberfl, 1885. Serial No. 184,534. (Model) I lines of Fig. 1; Fig. 3, a sectional view of 'the ring-center detached; and Fig. 4, a see tional view similar to Fig. 2 of a modified form of my invention.

Like letters refer to like parts in all the fig ures of the drawings.

My invention relates to watch-cases, its ob- 2 ject being to provide a dust-proof case to inwhich I believe to be new and desire to protect by Letters Patent.

In the drawings, A represents the case-center. This case-center is provided at its upper edge with an inwardly-projecting flange, a, for the purposes hereinafter stated.

13 indicates a back cap, which may be attached to the case A in any suitable manner, either by snapping or screwing it into place.

In Figs. 1,2, and 3 of the drawings I have shown a construction in which the center A is internally threaded for a portion of its length, the back cap, B, being provided with a horizontal flange, b andwith an externally-threaded cylindrical portion, 1), extending above the said flange. In this construction the back cap, B, screws into the threaded center A, the flange b forming a seat upon which the center rests when in position, as shown in Fig. 2 of the drawings. This back cap may, however, be

attached in the manner shown in Fig. 4 of the drawings, in which case the center A is shown provided with an externally-threaded projecting flange, a, the back cap being threaded to screw upon the said flange and bear against the center, as clearly shown in said figure.

0 indicates a case-lining, which is cup-shaped in form being preferably constructed in a single piece, and having hinged to its periphery in any suitable manner a movement-holding ring D. This lining is of an external diameter equal to the normal internal diameter of the case-center A, and is adapted to be inserted in the said center from the rear, its front edge bearing against and being supported by thefiange c of the center,which covers the said edge, as shown in the several figures of the drawings. This lining, when placed in position, may be secured by any suitable means. E represents the front cap of the case, which in the construction shown is hinged to the center A and is provided with the crystal 0.

In the assembling of the parts composing this case the case-lining O,with its movementholding ring and movement, is placed in the case-center A from behind, and the back cap, 13, is then secured to the case-center, these operations being effected, as desired, either before or after the front cap is applied.

When it is desired toinspectthe movement, it is only necessary to remove the back cap and then the lining,when the movement-holding ring may be swung out and the movement thus exposed.

In the construction shownitisobvious that the front cap, E,with its crystal 6, maybe snapped or screwed into position on the center A, instead of being hinged thereto. It is also 0bvions that the same construction may be applied to a hunter-case watch, the necessary alterations being sufficiently obvious without the necessity of further description. It is also obvious that various modifications in the details of construction may be made without departing from the principle of my invention. I

therefore do not wish to be understood as limiting myself strictly to the precise details hereinbefore described,and shown in the drawings. Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination,with the center A, hav- ITO ing inwardly-projecting flange a and threaded case lining 0, having movement-holding ring internally, 0f the case-lining 0, having mo've- D, hinged to its periphery, the said lining bement-holding ring D and adapted to fit withing adapted to fit Within the case-center and in the center and against the flange, the back against the flange thereon, substantially as and 5 cap, B,having flangebandscrew-threaded por- I for the purposes specified.

tion b, and the front cap E, snbstantiall y as i v v and for the purposes specihed. CHARLES GILES 2. The c0mbinati0n,with the center A, hav- Witnesses: ing inwardly-projecting flange a and a suit- JOSEPH HARDIE,

IO able back and front cap,0f the cup-shaped J. HARRIS. 

